Adolescence is often a stage of confusion and upheaval -- both for the young person and for their parents. Due to the physical, emotional, and intellectual changes that young people undergo during this transitional period, it's hardly surprising. Transitioning from childhood to adulthood isn't easy for most people, and the complexity of modern life certainly seems to complicate the process.

A vast array of often conflicting opinions, ideas and news are only a few clicks of the button away in this Information Age. All too often, violence and dangerous behaviors are given flattering and undeserved attentions by the media. Many parents are rightly concerned about the availability of drugs, alcohol and other harmful choices that their children are exposed to at this trying age.

It seems that cases of adolescent depression, drug or alcohol dependency, and other mental health issues in both teenagers and pre-teens are becoming increasingly common. During this time, independence is strongly desired, yet coping skills and judgment are still developing. Many parents find it hard to tell whether a certain behavior is normal for this age group, or if it necessitates the assistance of a mental health professional to resolve potentially major problems.

A trigger for such problems is often a major life event. These can include the death of a loved one, divorce, problems or issues in friendships or romantic relationships, serious injury to the adolescent themselves or a family member or friend, or a national tragedy. Particularly following such events, it is important for parents to notice any changes in their child's behavior. Here are a few behaviors to look for that may indicate a need to consult a professional:

1. An increase in secrecy and defensiveness. While it is common for kids of this age to desire additional privacy, it may warrant concern if the adolescent suddenly begins to lock his or her bedroom door and takes more time than expected to answer the door when the parent knocks.

2. Stealing money from a parent's purse or wallet. While the theft itself is a serious issue, needing additional money could point to a drug habit or other problem as well.

3. Mood swings that are extreme or unexpected, moving from elation to outbursts of anger that seem disproportional reactions to situations.

4. Unexplained cuts on the body.

5. Open defiance toward parents or other authority figures, routinely missing curfew, chronic lateness or habitual lying about plans and whereabouts.

6. A sudden alteration in friends, particularly if the young person doesn't bring new friends home so parents can get to know them. Changes in behavior, attitude and clothing at the same time may be another reason for concern.

7. A loss of interest in things the young person used to enjoy, or a significant drop in performance at school.

While these aren't the only warning signs, they are a reasonable place to start. Parents know their children better than everyone else, and every child is different. Some of these behaviors may be more "normal" for a given teen than others; the critical thing is for parents to be aware of their adolescents' immediate worlds and notice any behavior changes. If parents suspect a serious problem, they should trust their gut and contact a psychologist or other qualified mental health professional.

Keeping the lines of communication open is critical to fostering a healthy relationship at any age. A trained professional can greatly assist both parents and adolescents in improving communication skills and strengthening family bonds during this challenging phase.